Drill America 1-1/4-12 Left Hand Bottoming Tap - Re-thread & Repair

In this review of the Drill America 1-1/4-12 Left Hand Bottoming Tap the bottom line is simple: this tool is for machinists and hobbyists who need a dedicated left hand, bottoming tap for re-threading or creating threads to the bottom of blind holes. It is most useful when working with materials like brass or for backing out jammed threaded parts because the left hand cut can help reverse seized fasteners. The review focuses on real-world workability, noting sharp thread geometry and general value while also flagging durability reports from some buyers.

Key Features

• Left hand cut: Useful for reversing seized or jammed fasteners and for creating reverse-threaded connections where required.
• Bottoming tap style: Designed to generate full threads to the bottom of blind holes so you do not need to compromise on thread length.
• High speed steel: Provides versatility for hand tapping or light power tapping while maintaining sharpness on initial cuts.
• Uncoated finish: The raw substrate is suitable across a range of materials and avoids issues some coatings can introduce in delicate applications.
• Single pack convenience: Sold as one bottoming tap, ideal when you only need the final-thread tool for repair or finishing work.

Who It's For

This tap suits professional machinists, maintenance techs, and serious hobbyists who frequently work with threaded repairs or need reverse-threaded solutions. It is particularly handy when dealing with brass and other softer metals where the sharp thread profile can cut cleanly.

Those who should look elsewhere include operators who need a full three-piece tap set for starting and progressing threads, or anyone requiring a coated or specialty alloy tap for higher heat or abrasive environments. If durability under heavy production loads is the top priority, consider hardened or coated alternatives designed for extended life.

Pros & Cons

Pros

• Works well for re-threading and bottom-of-hole thread generation where a left hand reverse cut is required.
• Sharp thread geometry gives clean cuts in materials like brass, improving finish and fit.
• High speed steel makes it versatile for hand use and light power tapping without overheating quickly.
• Uncoated tool is broadly compatible across many common workpiece materials.

Cons

• Some customers reported breakage on first use, indicating this may not be ideal for heavy-handed or high-volume production without careful technique.
• Sold as a single bottoming tap, so you will need taper and plug taps separately to start difficult threads.

Specifications

Product	Left hand bottoming tap
Thread size	1-1/4-12
Cut	Left hand (reverse)
Material	High speed steel
Finish	Uncoated (base substrate)
Pack quantity	1 bottoming tap

Our Verdict

The Drill America 1-1/4-12 Left Hand Bottoming Tap is a sensible, cost-effective pick for users who need a dedicated reverse bottoming tap for repairs or finishing threads in blind holes. It delivers sharp cutting and good workability in softer metals, making it good value for anyone who understands its intended role and handles it with appropriate technique.

Frequently Asked Questions

Can this tap be used by hand?
Yes, the high speed steel construction makes it suitable for hand tapping and light power tapping applications.

Is this tap coated for extra durability?
No, it is uncoated and supplied as the base HSS substrate, which is versatile but not optimized for extreme wear or heat resistance.

Does the pack include taper and plug taps?
No, this listing is a single bottoming tap; a full set would include taper and plug styles sold separately or as a set.